"The problem is that it gives the result that I want" I'm not sure that's what one would usually identify as a problem....can you say a little more specifically what you are looking to do?
Michael On Mon, Mar 26, 2012 at 10:12 AM, MSousa <ricardosousa2...@clix.pt> wrote: > Thanks for the reply. > > I am using the function you gave me. > > complete.travel<-merge(travel, city, by.x = "Source", by.y = "cod", all = > TRUE) > complete.travel<-merge(travel, city, by.x = "Destine", by.y = "cod", all = > TRUE > > > The problem is that it gives the result that I want > The idea is based on the column of source and intended Identify the > cities and put a new data structure > > The idea is something like this. > pos Source city Destine city_destine > 1 1 Barcelona 2 Madrid > 1 1 Barcelona 3 Lisbon > 2 3 Lisbon 4 Milan > 3 2 Madrid 4 Milan > > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/copy-the-columns-based-on-the-code-tp4505253p4505939.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.